1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ugo [173]
3 years ago
8

What are the values of a1 and r of the geometric series?

Mathematics
1 answer:
tester [92]3 years ago
4 0

Answer:

r = 1/3

= 1

Step-by-step explanation:

1 + 1/3 + 1/9 + 1/27 + 1/ 81

In this series a is the first  term = 1

r is the common ratio = 2nd term/1st term = 3rd term/ 2nd term

r = 1/3 ÷ 1 = 1/9 ÷ 1/3

r = 1/3

I hope this was helpful, please mark as brainliest

You might be interested in
Evaluate the following expression. -8 - (-10)^2. please please help I will give brainlist 1st who ansers​
Alekssandra [29.7K]

Answer:

-108

Step-by-step explanation:

-8 - ( -10 )²

= -8 - 100

= -108

5 0
2 years ago
Answers: <br> A.5<br> B.9<br> C.10<br> D.13<br> Need the answer ASAP
maw [93]

Answer:

<u>x = 5</u>

Step-by-step explanation:

See attached image.

8 0
2 years ago
If a rectangle has an area of x^2+x-20 and a width of x-4, what is the length?
Mrac [35]

Answer:

This (x - 5) represents the length of the rectangle.

Step-by-step explanation:

The formula for the area of a rectangle of length L and width W is A = L * W.

Here, the width is x - 4 and the area is x^2 + x - 20.  Dividing the width (x - 4) into the area results in an expression for the length:

x - 4  /   x^2 + x - 20

Let's use synthetic division here.  It's a little faster than long division.

If the divisor in long division is x - 4, we know immediately that the divisor in synthetic division is 4:

4   /   1    1    -20

              4     20

    --------------------

         1     5     0

This synthetic division results in a remainder of 0.  This tells us that 4 (or the corresponding (x - 4) is indeed a root of the polynomial x^2 + x - 20, and so *(x - 4) is a factor.  From the coefficients 1 and 5 we can construct the other factor:  (x - 5).  This (x - 5) represents the length of the rectangle.

4 0
2 years ago
Pls answer with real answers only thank you
aev [14]
Answer: 32.35 cm^2

Step by step:

Find the area of the rectangle first.

A= L • W
A= 11 • 4.2
A= 46.2 cm^2

Then find the area of the circle. The formula is A= pi (r)^2. The diameter of the circle is 4.2 cm because looking at the width of the rectangle it fits into the circle as well.

Half of the diameter is 2.1 cm which is the radius.

A= pi (r)^2
A= pi (2.1)^2
A= pi (4.41)
A= 13.85 cm^2

Then you would subtract 13.85 from 46.2 to find the shaded portion.

Hope this helps :))

4 0
2 years ago
Let f(x)=x²-x-30<br><br> what are the zeros of the function?
tigry1 [53]
<span>x²-x-30=0
factor this equation first

(x-6)(x+5) = 0
x - 6 = 0
x + 5 = 0

x = 6 , x = -5
</span>
6 0
2 years ago
Other questions:
  • Identify the percent of change as an increase or a decrease
    10·1 answer
  • An earthquake can be felt in a circular pattern from the epicenter. If the equation of this pattern is x2 + y2 = 2500, how many
    11·2 answers
  • What does 1/3+1/4 equal to?
    9·1 answer
  • 433x3 how u start this off
    10·2 answers
  • This is the second page and i need to do the who page, again must include tables
    11·1 answer
  • The perimeter of a rectangular plot of land is 250 meters if the. Length of one side of the plot is 40 meters what is the area o
    8·1 answer
  • john wants to measure the hieght of a tree. he walks exactly 100 ft from the base of the tree and looks up. the angle from the g
    9·1 answer
  • PLS HELP ITS URGENT
    10·1 answer
  • Which ordered pairs are in the solution set of the system of linear inequalities?
    11·1 answer
  • Will mark BRAINEST please help solve for x
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!